Graphical Explanation in Bayesian Networks

  • Authors:
  • Carmen Lacave;Roberto Atienza;Francisco J. Díez

  • Affiliations:
  • -;-;-

  • Venue:
  • ISMDA '00 Proceedings of the First International Symposium on Medical Data Analysis
  • Year:
  • 2000

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Abstract

Bayesian networks have proved to be an appropriate tool for medical diagnosis, because uncertain reasoning in this field is based on a combination of causal knowledge and statistical data. However, a condition for the acceptance of a medical expert system is the ability to explain the diagnosis. This is a difficult task, because probabilistic inference seems to have little relation with human thinking. The current paper focuses on the graphic interface that constitutes one of the explanation capabilities of Elvira, a software tool for the edition and evaluation of graphical probabilistic models. The method we describe consists in working with different evidence cases and simultaneously displaying the corresponding probabilities.